src/mainboard/google/cyan/variants/banon/spd_util.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #include <console/console.h>
   4 #include <mainboard/google/cyan/spd/spd_util.h>
   5
   6 /*
   7  * 0b0000 - 4GiB total - 2 x 2GiB Samsung K4E8E304EE-EGCE
   8  * 0b0001 - 4GiB total - 2 x 2GiB Samsung K4E8E324EB-EGCF
   9  * 0b0011 - 4GiB total - 2 x 2GiB Hynix H9CCNNN8JTBLAR
  10  * 0b0100 - 4GiB total - 2 x 2GiB Micron MT52L256M32D1PF
  11  * 0b0101 - 4GiB total - 2 x 2GiB Hynix H9CCNNN8GTALAR
  12  * 0b0110 - 4GiB total - 2 x 2GiB NY NT6CL256T32CM-H1
  13  * 0b1000 - 2GiB total - 1 x 2GiB Samsung K4E8E304EE-EGCE
  14  * 0b1001 - 2GiB total - 1 x 2GiB Samsung K4E8E324EB-EGCF
  15  * 0b1011 - 2GiB total - 1 x 2GiB Hynix H9CCNNN8JTBLAR
  16  * 0b1100 - 2GiB total - 1 x 2GiB Micron MT52L256M32D1PF
  17  * 0b1101 - 2GiB total - 1 x 2GiB Hynix H9CCNNN8GTALAR
  18  * 0b1110 - 2GiB total - 1 x 2GiB NY NT6CL256T32CM-H1
  19  */
  20
  21 int get_variant_spd_index(int ram_id, int *dual)
  22 {
  23         int spd_index = ram_id & 0x07;
  24
  25         /* Determine if single or dual channel memory system */
  26         /* RAMID3 is deterministic for banon */
  27         *dual = ((ram_id >> 3) & 0x1) ? 0 : 1;
  28
  29         /* Display the RAM type */
  30         printk(BIOS_DEBUG, *dual ? "4GiB " : "2GiB ");
  31         switch (spd_index) {
  32         case 0:
  33                 printk(BIOS_DEBUG, "Samsung K4E8E304EE-EGCE\n");
  34                 break;
  35         case 1:
  36                 printk(BIOS_DEBUG, "Samsung K4E8E324EB-EGCF\n");
  37                 break;
  38         case 2:
  39                 printk(BIOS_DEBUG, "Unknown future LPDDR3\n");
  40                 break;
  41         case 3:
  42                 printk(BIOS_DEBUG, "Hynix H9CCNNN8JTBLAR\n");
  43                 break;
  44         case 4:
  45                 printk(BIOS_DEBUG, "Micron MT52L256M32D1PF\n");
  46                 break;
  47         case 5:
  48                 printk(BIOS_DEBUG, "Hynix H9CCNNN8GTALAR\n");
  49                 break;
  50         case 6:
  51                 printk(BIOS_DEBUG, "Nanya NT6CL256T32CM-H1\n");
  52                 break;
  53         }
  54         return spd_index;
  55 }